<template>
  <div>
    <h1>当前求和为：{{ sum }}</h1>
    <h1>当前求和为：{{ bigSum }}</h1>
    <h1>我在{{ school }}，学习{{ subject }}</h1>
    <h3 style="color: skyblue">
      Person组建的总人数为：{{ personList.length }}
    </h3>

    <!-- v-model绑定默认的选择数字 -->
    <select v-model.number="n">
      <option value="1">1</option>
      <option value="2">2</option>
      <option value="3">3</option>
    </select>
    <button @click="increment(n)">+</button>
    <button @click="decrement(n)">-</button>
    <button @click="incrementOdd(n)">当前为奇数加</button>
    <button @click="incrementWait(n)">等一等再加</button>
  </div>
</template>

<script>
import { mapState, mapGetters, mapMutations, mapActions } from "vuex";
export default {
  name: "Count",
  data() {
    return {
      n: 1,
    };
  },
  methods: {
    // 借助mapMutations生成对应的方法，方法中会调用commit去联系mutations(对象方法)
    ...mapMutations("countAbout", { increment: "JIA", decrement: "JIAN" }),
    // 借助mapMutations生成对应的方法，方法中会调用commit去联系mutations(数组方法)
    // ...mapMutations(["JIA", "JIAN"]),

    // 借助mapActions生成对应的方法，方法中会调用dispatch去联系actions(对象方法)
    ...mapActions("countAbout", {
      incrementOdd: "jianOdd",
      incrementWait: "jianWait",
    }),
    // 借助mapActions生成对应的方法，方法中会调用dispatch去联系actions(数组方法)
    // ...mapActions(["jianOdd", "jianWait"]),
  },
  computed: {
    // ...mapState es6写法，会直接将mapState一一展开在computed对象中
    // 借助mapState生成计算属性，从state中读取数据（对象写法）
    // ...mapState({ sum: "sum", school: "school", subject: "subject" }),
    // 借助mapState生成计算属性，从state中读取数据（数组写法）
    ...mapState("countAbout", ["sum", "school", "subject"]),
    ...mapState("personAbout", ["personList"]),

    // 借助mapGetterse生成计算属性，从getters中读取数据（对象写法）
    ...mapGetters("countAbout", { bigSum: "bigSum" }),
    // 借助mapState生成计算属性，从state中读取数据（数组写法）
    // ...mapGetters(["bigSum"]),
  },
};
</script>

<style scoped>
button {
  margin-left: 5px;
}
</style>